Liner and receptacle



Jqne 12, 1951 I H. R. DENTON LINER AND RECEPTACLE Filed June 24, 1946'INVENMR.

' BY I 7%, mqfiwz ATTORNEYS Patented June 12,1951

2,556,321 LINER AND RE-CEPTACLE Harvey R. Denton, Oakland, Califassignor to Moist-R-Proof Container 00., San Francisco, Calif., acorporation of California Application June 24, 1946, Serial No. 678,922

1 Claim.

This invention relates to a liner and has for one of its objects theprovision of a flexible, paper-like liner foldable or expandable from aflat collapsed position to expanded rectangular position and vice versa,and means secured to said liner for manual manipulation to cause saidcollapse and expansion automatically upon such manipulation.

Another object of this invention is the provision of a receptacle ofsemi-rigid material and a liner in combination therewith together withmeans secured to said liner for expanding and collapsing the latter, andwhich liner and means cooperate with the receptacle in a manner wherebythe receptacle will hold the said means and liner in expanded positionwithin the receptacle.

In the packaging of some materials by the retail storekeeper fordelivery to the user, the Storekeeper places a liner in a cardboard boxand then fills the liner with the material. This procedure isquite'common with such foods as are moist, the liner being of water ormoisture proof material, whereas the receptacle enclosing the liner maybe of relatively cheap material.

One of the objections to this procedure is the trouble in positioningthe liner in the outer receptacle, inasmuch as the liners are foldedflat and must be fitted in the receptacle or are merely fiat sheets ofwaterproof material having no particular form adapting it to thereceptacle.

The present invention overcomes this objection in that the liner isprovided with a collar of semi-rigid material that is adapted to foldflat with the liner, but upon expanding the collar the liner willautomatically expand with it and will be in a position, either forfilling and delivery independently of the receptacle, or for insertionin the receptacle for being held and supported by the latter. Also theliner and collar are adapted to fit into the outer receptacle tocooperate therewith.

Other objects and advantages will appear in the description and in thedrawings.

In the drawings, Fig. l is a perspective view of the liner in expandedposition ready for insertion in an outer receptacle, or for fillingindependently of the receptacle if so desired. Part of the liner isbroken away.

Fig. 2 is a side elevational view of the liner and collar folded flat.

Fig. 3 is a perspective view showing the liner being expanded by thecollar, the liner and collar being partially expanded.

Fig. 4 is a perspective view showing the liner expanded and in an outerreceptacle.

Fig. 5 is a reduced side elevational view of a complete receptacleincluding its cover enclosing a liner of the type shown in Figs. 1, 4(the liner is not shown).

In detail, the liner is preferably a rectangular sheet of waterproofmaterial, such as regenerated cellulose or chlorinated rubber, whichsheet is formed to provide a conventional bag having fiat opposed sidewalls 4, opposed end walls 2, and a bottom wall 3. This bag is adaptedto fold flat with the opposed side walls I together; each of the endwalls being formed with a central vertical folding crease 4 in theconventional manner, for infolding of the end walls to positions betweenthe side Walls when the bag is folded fiat (Fig. 2). There is nothingnew about this bag in itself, since it is a common construction inmaking bags of paper and paperlike materials.

When the bag is folded fiat the bottom 3 is in coplanarextension of thesides 5, there being a central folding crease 5 extending across thebottom between end walls 2, said crease being midway between the foldinglines 6 that define the junctures between the side walls I and thebottom wall.

In carrying out this invention I provide a rec-- tangular collar '7 thatis adapted to enclose thebag. Thus collar i has opposed side strips 8-that are of the same width as that of side walls I and connectingcorresponding ends of side strips 8 are end strips 9 that are of thesamewidth as the width of end walls 2 where the bag is expanded. Foldingcreases extending transversely of the strips 8, 9 are at theirjunctures, and folding creases 10 are in end strips 9 midway betweentheir ends.

The side strips 8 are secured to the outer sides of the side walls l inany suitable manner, such as an adhesive ll so that the ends of thestrips terminate at the side edges of said sides, while the bottom edgesof said strips are even with the folding creases 6 that define thejunctures between the side walls l and the bottom wall 3.

The end strips 9 are not secured to the end walls 2, but are free fromsecurement thereto,

and the folding creases I!) are so formed that the 7 end strips II] willoutfold when the bag is 001- lapsed, as best seen in Fig. 2, and thecollar will collapse flat with the bag.

In operation, upon the operator drawing the side strips apart, or uponmoving the end strips 9 toward each other from the collapsed position(Fig. 3) the collar will open out to rectangular position (Fig. 1), andthe bag will automatically open out to its expanded, rectangularposition.

When the bag and collar are expanded, it is not difficult to fill thebag, although the end pieces 9 tend to outfold. Material deposited inthe bag will counteract this tendency of the bag to outfold and thecollar, being of semi-rigid material will reinforce the bottom end ofthe bag during and after filling of the latter and will keep the lowerend of the bag rectangular in shape.

In most instances, after the bag is opened out. to expanded position byexpanding the collar, the collar and lower end of the bag are set in arelatively shallow rectangular outer receptacle [5, having side walls E6and end walls I"! and a bottom on which the bottom of the bag issupported (Fig. 4). This outer receptacle does not necessarily fullyenclose the collar, but may extend only about half the width of thelatter (Fig. 4). However, adequate support is provided by the receptaclefor holding the collar rectangular against its tendency to collapse andthus holding the bag fully expanded. The bottom of the receptacle alsoforms a support for the bottom of the bag and the side and end walls ofthe receptacle reinforce the side and end strips of the collar.

When the bag is expanded and in receptacle I5 as seen in Fig. 4, the bagmay be easily filled to a depth equal to the width of the collar, afterwhich the top of the bag may be folded over the material therein and aclosure 29 that is substantially identical with the receptacle I5 may befitted over the projecting portion of the collar (Fig. 5) whereby theliner is fully enclosed and a neat strong waterproof package isprovided.

While I have referred to the outer receptacle i5 and the closure 29 ascombining to provide the receptacle that fully encloses the liner,-it isobvious that receptacle i5 or closure 2% may become the lower or upperhalf of the receptacle, as desired. In some materials, the pre-sealedbottom wall 3 actually becomes the top wall when the package of Fig. 5is fully formed, in-

asmuch as the weight of the material on the last folded portion of thebag will keep it closely sealed against ingress of air.

It is to be understood that the detailed derxcription and drawings arenot to be considered restrictive of the invention, but are merelyillustrative of a preferred form thereof.

I claim:

In combination with a rectangular, four sided receptacle of semi-rigidmaterial, a rectangular four sided collar within said receptaclesupported by and against the sides of said receptacle in expandedposition against collapse, said collar being formed with folding creasesextending transversely thereof for folding to flat collapsed positionwhen out of said receptacle and being unsecured to the latter forremoval therefrom, a flexible liner of paper-like material within saidcollar supported by the latter in expanded position within saidreceptacle, said liner being unsecured to said receptacle and beingsecured at two of its opposed sides to two opposed sides of said collarfor holding thereof by said collar in said expanded position and forfolding flat with said collar when the latter is removed from saidreceptacle and is folded flat, said collar projecting above the sides ofsaid receptacle and a rectangular cover having lateral side wallsdepending therefrom enclosing the projecting portion of said collar.

HARVEY R. DENTON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,011,179 Krout Aug. 13, 19352,130,019 Meier Sept. 13, 1938 2,143,957 Petter Jan. 17, 1939 2,189,841Vogt Nov. 21, 1939 2,349,088 Guyer May 16, 1944

